Error looking up EJB

[Regis Santos]

Hello.

How can I access a local EJB from a servlet by its JNDI name when both application are not in the same EAR?

Both application are running in the same server (WebSphere 6.1). But when I invoke the context.lookup() method passing the JNDI name as parameter, I got a NamingExecption.

This is my code:

StartupMonitorServlet

...
try {
  Context ctx = new InitialContext();
  StartupMonitorLocalHome home = (StartupMonitorLocalHome) 
       ctx.lookup("ejb/StartupMonitorBean");
  StartupMonitorLocal startup = home.create();
  startup.start();
} catch (NamingException e) {
  ...
} catch (CreateException e) {
  ...
}
...

web.xml

<web-app ...>
  ...
  <ejb-local-ref>
    <ejb-ref-name>ejb/StartupMonitorBean</ejb-ref-name>
    <ejb-ref-type>Session</ejb-ref-type>
    <local-home>test.StartupMonitorLocalHome</local-home>
    <local>test.StartupMonitorLocal</local>
  </ejb-local-ref>
...
</web-app>

Error message:

javax.naming.NameNotFoundException:
Context: E69Node01Cell/nodes/E69Node01/servers/server1,
name: ejb/StartupMonitorBean: First component in name StartupMonitorBean not found.
[Root exception is org.omg.CosNaming.NamingContextPackage.NotFound:
IDL :o mg.org/CosNaming/NamingContext/NotFound:1.0]

There's no EJB reference binding in the ibm-web-bnd.xmi.

Thanks!
[ December 12, 2007: Message edited by: Regis Santos ]

[Sachin Vrma]

Hi,
You just have to add one entry in your ibm-web-bnd.xmi...
Add id for the ejb reference in the web.xml

 
  ...
  <ejb-local-ref id="your_ejb_ref_id" >
    <ejb-ref-name>ejb/StartupMonitorBean</ejb-ref-name>
    <ejb-ref-type>Session</ejb-ref-type>
    <local-home>test.StartupMonitorLocalHome</local-home>
    <local>test.StartupMonitorLocal</local>
  </ejb-local-ref>
...
 

Add corresponding entry in ibm-web-bnd.xmi for providing the jndi name...

<ejbRefBindings xmi:id="ejb_ref_binding_id" jndiName="your/jndi/name/here">
    <bindingEjbRef xmi:type="common:EJBLocalRef" href="WEB-INF/web.xml#your_ejb_ref_id"/>
</ejbRefBindings>

[ December 17, 2007: Message edited by: Sachin Vrma ]
[ December 17, 2007: Message edited by: Sachin Vrma ]

[Regis Santos]

Hello Sachin,

I did as you told me. But I got the following exception when the servlet tried to find the local EJB via JNDI.

javax.naming.NameNotFoundException: 
Context: E69Node01Cell/nodes/E69Node01/servers/server1, name: ejb/StartupMonitorBean: 
  First component in name StartupMonitorBean not found. 
[Root exception is org.omg.CosNaming.NamingContextPackage.NotFound:
   IDL:omg.org/CosNaming/NamingContext/NotFound:1.0]

I tried to change the JNDI name for
cell/nodes/E69Node01/servers/server1/ejb/StartupMonitorBean,
but it wasn't work, too.

These are my deployment descriptors:

ejb-jar.xml

...
<session id="StartupMonitorBean">
  <display-name>StartupMonitorBean</display-name>
  <ejb-name>StartupMonitorBean</ejb-name>
  <local-home>test.StartupMonitorLocalHome</local-home>
  <local>test.StartupMonitorLocal</local>
  <ejb-class>test.StartupMonitorBean</ejb-class>
  <session-type>Stateless</session-type>
  <transaction-type>Bean</transaction-type>
  <resource-ref id="ResourceRef_1163184579093">
    <res-ref-name>jdbc/OracleDS</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
    <res-sharing-scope>Shareable</res-sharing-scope>
  </resource-ref>
</session>
...

ibm-ejb-jar-bnd.xmi

...
<ejbBindings xmi:id="EnterpriseBeanBinding_1078303965795"
    jndiName="ejb/StartupMonitorBean">
    <enterpriseBean xmi:type="ejb:Session" 
        href="META-INF/ejb-jar.xml#StartupMonitorBean"/>    
    <resRefBindings xmi:id="ResourceRefBinding_1163184579093" 
        jndiName="jdbc/OracleDS">
      <bindingResourceRef 
          href="META-INF/ejb-jar.xml#ResourceRef_1163184579093"/>
    </resRefBindings>
  </ejbBindings>
...

web.xml

...
<ejb-local-ref id="EjbRef_1163184642907">
  <ejb-ref-name>ejb/StartupMonitorBean</ejb-ref-name>
  <ejb-ref-type>Session</ejb-ref-type>
  <local-home>test.StartupMonitorLocalHome</local-home>
  <local>test.StartupMonitorLocal</local>
</ejb-local-ref>
...

ibm-web-bnd.xmi

...
<ejbRefBindings xmi:id="EnterpriseBeanBinding_1078303965795" 
    jndiName="ejb/StartupMonitorBean">
  <bindingEjbRef href="WEB-INF/web.xml#EjbRef_1163184642907"/>
</ejbRefBindings>
...

FYI: the EJB module and the WAR are in the same EAR.

Thanks,